Good shift register?

Microcontrolled

Does anyone know of a good shift register to purchase? I've never used one, and don't know where to start.

hover1

Microcontrolled wrote: »

Does anyone know of a good shift register to purchase? I've never used one, and don't know where to start.

What flavor? Ser-in/Ser-out, Ser-in/Par-out,Par-in/Ser-out? I2c, SPI?

http://en.wikipedia.org/wiki/Shift_register

The 74HC165 Parallel to Serial:
http://www.parallax.com/StoreSearchResults/tabid/768/txtSearch/Shift/List/0/SortField/4/ProductID/230/Default.aspx
and
74HC595 Serial to Parallel:
http://www.parallax.com/StoreSearchResults/tabid/768/txtSearch/Shift/List/0/SortField/4/ProductID/229/Default.aspx
are sold by Parallax and well supported here in the forums.


Jim

Microcontrolled

Serial in, Parallel out. Thanks for the link. :-)

eod_punk

Chris Savage has a clock that he used the 74HC595 Serial to Parallel with a BS2. Probally a good place to start.
http://www.savagecircuits.com/forums/showthread.php?164-Binary-Digital-Clock

John A. Zoidberg

For start, you can use the 74HC595. Pretty effective and ideal.

Microcontrolled

Can the 74HC595 chips be daisy-chained together?
Is there any way to combine many of them to one IO pin outputting serial data?

LoopyByteloose

The answer would be in the PDF, but as I recall from memory you can daisy chain it. Double check as you need the PDF anyway to write the bug right.

hover1

Microcontrolled wrote: »

Can the 74HC595 chips be daisy-chained together?
Is there any way to combine many of them to one IO pin outputting serial data?

How about 100!

http://obex.parallax.com/objects/437/

Jim

kwinn

I have daisy chained as many as 8 with no problems, but I imagine at some number of chips you will need to add drivers to the gate, register clock, serial clock and serial clear lines since they would be driving all 100 chips in parallel.